login

A111800 as a simple table

na(n)
11
23
35
45
57
67
77
87
97
109
119
129
139
149
1511
167
179
189
199
2011
2111
2211
239
2411
259
2611
279
2811
2911
3013
3111
329
3313
3411
3513
3611
3711
3811
3913
4013
4111
4213
4311
4413
4513
4611
4713
4811
499
5011
5113
5213
539
5411
5515
5613
5713
5813
5911
6015
6111
6213
6313
649
6515
6615
6711
6813
6913
7015
7113
7213
7313
7413
7513
7613
7715
7815

[1,3,5,5,7,7,7,7,7,9,9,9,9,9,11,7,9,9,9,11,11,11,
 9,11,9,11,9,11,11,13,11,9,13,11,13,11,11,11,13,13,
 11,13,11,13,13,11,13,11,9,11,13,13,9,11,15,13,13,
 13,11,15,11,13,13,9,15,15,11,13,13,15,13,13,13,13,
 13,13,15,15]